// Widget smoke-test for the FlowEditorPage.
//
// Platform.environment is read-only from inside the test
// isolate, so we can't redirect HOME to a temp directory.
// Instead this test pumps the page and verifies that the
// widget tree builds without throwing — exercising the
// missing-directory empty-state path on hosts without
// ~/.fai/data/flows.

import 'package:fai_studio/l10n/app_localizations.dart';
import 'package:fai_studio/pages/flow_editor.dart';
import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter_test/flutter_test.dart';

void main() {
  Widget wrap() {
    return MaterialApp(
      locale: const Locale('en'),
      supportedLocales: const [Locale('en'), Locale('de')],
      localizationsDelegates: const [
        AppLocalizations.delegate,
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      home: const FlowEditorPage(),
    );
  }

  testWidgets('builds without throwing + shows expected toolbar buttons',
      (tester) async {
    await tester.pumpWidget(wrap());
    await tester.pump(const Duration(milliseconds: 100));
    expect(find.text('New flow'), findsOneWidget);
    expect(find.text('Save'), findsOneWidget);
    expect(find.text('Run'), findsOneWidget);
    // Without an open file, the empty-state title shows.
    expect(find.text('No flow open'), findsAtLeastNWidgets(1));
  });
}